To return to the topic of your thread, Jeremy, you bring up an incredibly interesting parallel, worthy of a book in and of itself.
Have you also looked at English history? There are many historical parallels between the murder of the Russian imperial family and that of the Princes in the Tower - to wit, murdered royal children (in this case, Edward V and his brother, Richard, Duke of York), disappearing corpses (which were not found for some two hundred years), persistent rumors of the children's survival, and the subsequent rise of various pretenders in their name (i.e., Perkin Warbeck and Lambert Simnel).
If you ask me, it was a stroke of genius on the part of the Bolsheviks to keep the murder of the imperial children a mystery for so many years. It deprived the Whites of certain martyrs and lent credence to the stories of various royal claimants, further dividing the anti-Bolshevik cause. It almost makes you think somebody in charge was familiar with Shakespeare's play, "Richard III" - ? But that's doubtful.